Evoked Potential Correlates of Display Image Quality
- 1 October 1978
- journal article
- research article
- Published by SAGE Publications in Human Factors: The Journal of the Human Factors and Ergonomics Society
- Vol. 20 (5) , 589-596
- https://doi.org/10.1177/001872087802000508
Abstract
The electrical activity generated in the human brain following sensory stimulation can be recorded as voltage differences between electrodes attached to the scalp. These voltage differences are referred to as evoked potentials, and they offer a unique, yet objective, means of assessing visual function. As such, they may link subjective judgments concerning the apparent quality of displayed information with more quantitative measures of perception that are obtained from psychophysical investigations. This report describes the changes in evoked potential amplitude which are exhibited in response to variations in two display system parameters, horizontal resolution and gray shade level. Suggestions are made with respect to future research of this nature.Keywords
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